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How do you detect where two line segments intersect? [closed]
...f r × s = 0 and (q − p) × r ≠ 0, then the two lines are parallel and non-intersecting.
If r × s ≠ 0 and 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1, the two line segments meet at the point p + t r = q + u s.
Otherwise, the two line segments are not parallel but do not intersect....
Understanding the difference between Object.create() and new SomeFunction()
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The object used in Object.create actually forms the prototype of the new object, where as in the new Function() form the declared properties/functions do not form the prototype.
Yes, Object.create builds an object that inherits directly from the one passed as ...
Finding a substring within a list in Python [duplicate]
...
All the answers work but they always traverse the whole list. If I understand your question, you only need the first match. So you don't have to consider the rest of the list if you found your first match:
mylist = ['abc123'...
How to fix “Incorrect string value” errors?
... @Brian: If you tell it you're giving it cp1252, and you actually give it the UTF-8 for, say, café, it's going to misinterpret that as café. It won't crash, but it will misunderstand the high-bit characters.
– RichieHindle
Jul 22 '09 at 21:36
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What is the difference between AF_INET and PF_INET in socket programming?
... to do is to use AF_INET in your
struct sockaddr_in and PF_INET in your call to socket(). But
practically speaking, you can use AF_INET everywhere. And, since
that's what W. Richard Stevens does in his book, that's what I'll do
here.
...
How to generate .NET 4.0 classes from xsd?
...or the case you have several interlinked schema definitions just name them all. xsd schema1.xsd schema2.xsd schema3.xsd /c
– mivra
Oct 24 '16 at 19:40
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Python threading.timer - repeat function every 'n' seconds
... not self.stopped.wait(0.5):
print("my thread")
# call a function
In the code that started the timer, you can then set the stopped event to stop the timer.
stopFlag = Event()
thread = MyThread(stopFlag)
thread.start()
# this will stop the timer
stopFlag.set()
...
How to get the return value from a thread in python?
...ram in param_list] The order will be maintained, and exiting the with will allow result collection. [f.result() for f in futures]
– jayreed1
Jun 4 at 21:29
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Calculate difference in keys contained in two Python dictionaries
...s:
diff = set(dictb.keys()) - set(dicta.keys())
Here is a class to find all the possibilities: what was added, what was removed, which key-value pairs are the same, and which key-value pairs are changed.
class DictDiffer(object):
"""
Calculate the difference between two dictionaries as:
...
How to ISO 8601 format a Date with Timezone Offset in JavaScript?
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The below should work properly, and for all browsers (thanks to @MattJohnson for the tip)
Date.prototype.toIsoString = function() {
var tzo = -this.getTimezoneOffset(),
dif = tzo >= 0 ? '+' : '-',
pad = function(num) {
va...